We mock Yandex.

Copy text to clipboard.

Place the cursor as shown in the screenshot. There should be options that you have already entered.


Inserting text: Hold down Ctrl, press the right (left) mouse button, press V, release Ctrl.
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Deleting a search line: insert text into a line, select it, hold down Ctrl, press the right (left) mouse button, press V, release Ctrl.

Result.


All this worked fine in Firefox3.